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primary 6 | Maths | Speed
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primary 6 chevron_right Maths chevron_right Speed chevron_right Singapore

Pls help

Date Posted: 2 years ago
Views: 195

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Bryan Yeo
Bryan Yeo's answer
26 answers (Tutor Details)
Note:increased speed->Usual speed+30km/h)->2hours
Usual speed->2 and 3/4hours
So,30km/h x2 hours is the difference
in the distance of the 2 speeds when
The increased speed have reached(2h).
Usual speed takes 3/4hour to cover
A distance of 60km so it is (60x4/3)km/h
Which is equal to 80km/h.

45 minutes=3/4hours.
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AC Lim
Ac Lim's answer
343 answers (A Helpful Person)